Fresenius Medical Care 5008, Operating Instructions Manual

Page: 324 / 328

Chapter 23: Options BLK, WET
23-2 Fresenius Medical Care 5008 OP 5/09.06
O
Treatment
The BLK is activated in the HD, HDF and HF treatment modes, with the
optical detector sensing blood.
In the Single-Needle or in the Single-Needle Click-Clack treatment
mode, the BLK is not activated.
O
Alarm processing
If the following HDF/HF message is displayed: Kinking between blood
pump and dialyzer detected! Please check the blood line for possible
kinking!
– Device adaptation – Accept – Problem corrected Confirm .
If the following HD message is displayed: Pressure is increasing on the
blood-side dialyzer inlet port! – Device adaptation – Accept – Problem
corrected Confirm .
Touch the Confirm button after you have detected and eliminated an
obvious problem in the tubing system.
The threshold values for triggering a BLK warning remain unchanged.
Touch the Accept button if you do not detect any kinks in the tubing
system nor any clots developing in the dialyzer.
The threshold values for triggering a BLK warning will be adjusted
accordingly, in order to avoid following messages.
23.3 WET
Caution
Preventing contamination:
Use tubing systems with hydrophobic filters at the pressure lines to
prevent cross-contamination.
Connect the hydrophobic filters so that an ingress or loss of air is not
possible and that any wetting by fluid is reliably avoided, also in case of
pressure fluctuations.
If a hydrophobic filter has become wet, the tubing system must be
replaced.
On tubing systems with additional connection sites, a replacement
pressure line may be connected (accessory available from Fresenius
Medical Care).
The blood in the pressure line must not be forced back by means of a
syringe. This could damage the hydrophobic membrane and thus lead
to a contamination.
If fluid may have passed the hydrophobic filter, the system must be
checked for contamination after completion of the treatment. If the
system is contaminated, it has to be taken out of service. All affected
components have to be disinfected or replaced in accordance with the
manufacturer's specifications before the system is put into operation
again.